Abstract: The present disclosure relates to an electrolyte for a lithium secondary battery, and in particular, to a liquid electrolyte capable of stabilizing lithium metal and suppressing lithium dendrite growth, and a lithium secondary battery including the same. The lithium secondary battery provided with the electrolyte according to the present disclosure has an excellent cycle-dependent capacity retention rate, and accordingly, is effective in improving a battery lifespan property.

Abstract: A disclosed film electrode includes an electrode base, and an active material layer formed on the electrode base, and a resin layer adhering to at least one of a peripheral portion of the active material layer and a surface of the active material layer in a direction extending along a plane of the electrode base.

Abstract: A method for preparing a positive electrode active material, a positive electrode active material prepared using the same, and a lithium secondary battery, and in particular, to a method for preparing a positive electrode active material comprising the steps of (a) preparing a coating composition including a precursor of metal-phosphorous-oxynitride; (b) forming a precursor layer on a positive electrode active material with the coating composition of (a) using a solution process; and (c) forming a metal-phosphorous-oxynitride protective layer on the positive electrode active material by heat treating the positive electrode active material having the precursor layer formed thereon. The method for preparing a positive electrode active material uses a solution process, which is advantageous in terms of simplifying the whole process and reducing costs, and high capacity, high stabilization and long lifetime are obtained as well by the formed protective layer having excellent properties.

Abstract: A negative electrode material includes at least a graphite particle and a first metal oxide. The graphite particle includes at least one open pore. The graphite particle has a porosity not lower than 13% and not higher than 66%. The first metal oxide adheres to an inner wall of the open pore. The first metal oxide is lithium ion conductive and electron conductive. The first metal oxide is not smaller than 0.5 part by mass and not greater than 20 parts by mass with respect to 100 parts by mass of graphite particle.

Abstract: An energy storage device is provided which includes a supercapacitor first electrode, a supercapacitor second electrode, a first electrolyte, a metal electrode, and a separator. The supercapacitor first electrode, the supercapacitor second electrode, and the first electrolyte together form a supercapacitor. The metal electrode and the supercapacitor second electrode form an Ohmic contact. The separator is sandwiched between the metal electrode and the supercapacitor first electrode and configured to absorb moisture in a surrounding environment.

Abstract: A lithium secondary battery prepared to a negative electrode free battery, and forming lithium metal on a negative electrode current collector through charge. The lithium secondary battery forms lithium metal while being blocked from the atmosphere, and since production of a surface oxide layer (native layer) formed on an existing negative electrode is fundamentally blocked, resulting battery efficiency and lifetime property decline may be prevented.

Abstract: An electrode and a lithium secondary battery comprising the same, in particularly an electrode comprising an electrode layer, a pre-lithiation prevention layer formed on the electrode layer, and a lithium layer formed on the pre-lithiation prevention layer, which is capable of greatly improving the problem of the reduction of irreversible capacity of a negative electrode while preventing fire caused by a lithiation reaction due to contact between lithium and silicon before assembling a cell, and a lithium secondary battery including the same.

Abstract: According to an embodiment, a secondary battery is provided. The secondary battery includes a positive electrode, a negative electrode, separator, and an aqueous electrolyte. The separator is located at least between the positive electrode and the negative electrode. The separator includes a composite film. The composite film includes a mixture of a polymeric material and ion conductive solid electrolyte particles having alkali metal ions conductivity. The polymeric material includes a polymer comprising a monomer unit. The monomer unit is a hydrocarbon with a functional group including at least one element selected from the group consisting of oxygen (O), sulfur (S), nitrogen (N), and fluorine (F). A ratio of the polymer in the polymeric material is not less than 70 mol %.

Abstract: The present disclosure relates to the field of energy storage, and in particular to a separator, a method for preparing the separator, and an electrochemical device including the separator. The separator includes a porous substrate. At least one of a porous inorganic layer and an organic particle coating layer is provided on at least one surface of the porous substrate, and a composite layer is provided on at least one surface of the porous substrate. The composite layer includes a porous inorganic layer and an organic particle coating layer sequentially disposed on the surface of the porous substrate. The porous inorganic layer includes an inorganic dielectric material containing no binder. The organic particle coating layer is a coating discontinuously distributed on the porous inorganic layer. The composite layer has a mass of 0.2 g/m2 to 8.4 g/m2 per unit area.

Abstract: Provided is a negative-electrode active material for electricity storage devices that has a low operating potential, can increase the operating voltages of the electricity storage devices, and has excellent cycle characteristics. The negative-electrode active material for electricity storage devices, the negative-electrode active material containing a crystalline phase represented by a general formula Rx1R?x2MAyOz (where R represents at least one selected from Li, Na, and K, R? represents at least one selected from Mg, Ca, Sr, Ba, and Zn, M represents at least one selected from Ti, V, and Nb, A represents at least one selected from P, Si, B, and Al, 0?x1?6, 0?x2?6, 0<y?12, and 0.2?z?87, but a case where x1=0.5 and x2=0 and a case where x1=1.5 and x2=0 are excluded).

Abstract: A separator, a method for preparing the separator, and an electrochemical device containing the separator. The separator includes a substrate and an inorganic layer disposed on at least one side of the substrate. The substrate is a porous substrate. The inorganic layer is a dielectric layer containing no binder. The inorganic layer has a thickness of 20 nm to 2000 nm. A mass of the inorganic layer is M1, a mass of the substrate is M2, and M1/M2 is greater than or equal to 0.05 but smaller than or equal to 7.5. An interfacial peeling force between the inorganic layer and the substrate is not smaller than 30 N/m. The interfacial wettability and thermal shrinkage resistance performance of the separator are effectively improved while the separator has a certain mechanical strength. The separator can have favorable mechanical strength and thermal shrinkage percentage and high energy density.

Abstract: According to one embodiment, a secondary battery including a positive electrode, a negative electrode, and an electrolyte is provided. The negative electrode includes titanium-containing oxide and at least one kind of element selected from the group consisting of B, P, Al, La, Zr, Ge, Zn, Sn, Ga, Pb, In, Bi, and Tl. The electrolyte includes lithium ions and a solvent containing water.

Abstract: Cast components can improve the effectiveness of current state-of-the-art in thermal battery processing technology in terms of cost, labor, materials usage, and flexibility. Cast components can include cast cathodes, anodes, and separators.

Abstract: Provided are a solid electrolyte composition including: an inorganic solid electrolyte having conductivity of an ion of metal belong to Group 1 or 2 in the periodic table; and a high polymer binder, in which the high polymer binder is formed of a polymer having a hard segment and a soft segment, a binder for all-solid-state secondary batteries, and an electrode sheet for batteries and an all-solid-state secondary battery each using the solid electrolyte composition.

Abstract: An electrode assembly includes an electrode saturated with electrolyte, and one or more ionically conductive and electronically insulating cellulose acetate coatings forming a continuous and conformal film adhered to and encapsulating the electrode.

Abstract: A cathode for a lithium ion secondary battery, including: a cathode current collector; a PTC layer including an electrically conductive particle, a polymer particle, and a water-soluble polymer, the PTC layer being provided on the cathode current collector; and a cathode active material layer provided on the PTC layer, as well as a lithium ion secondary battery using the same.

Abstract: The present invention relates to a metal electrode, a method for preparing the same, and an electrochemical device comprising the same, and particularly, the present invention provides a metal electrode comprising a lithium or sodium metal electrode of which coating thickness can be controlled to a nano size, on which electrochemical active material, phosphorene in the form of two-dimensional monolayer thin film, or a multilayer thin film in which two or more layers of phosphorene are stacked is coated, a method for preparing the same, and an electrochemical device comprising the same.

Abstract: An in-situ X-ray analyzed coin cell battery includes a case, a cap combined with the case, and an energy storage member provided between the case and the cap. A hole through which an X-ray is irradiated is defined in at least one of the case and the cap.

Abstract: Disclosed is an apparatus for estimating a state of charge (SOC) of a secondary battery which includes (i) a cathode comprising a blended cathode material having a first cathode material and a second cathode material, wherein the first and second cathode materials have different operating voltage ranges; (ii) an anode comprising an anode material; and (iii) a separator for separating the cathode from the anode. The apparatus includes a sensor configured to measure a dynamic voltage of the secondary battery during charging of the secondary battery, and a control unit configured to identify a dynamic voltage profile of the secondary battery as a transition region voltage pattern, calculate a parameter of the transition region voltage pattern, and estimate a SOC of the secondary battery from the calculated parameter by using a predetermined relationship between the parameter and the SOC.

Abstract: Provided is a nonaqueous lithium-type power storage element in which a lithium compound is included in positive electrode, wherein energy loss due to voltage decrease under high temperatures and high voltages is reduced, and the high-load charge and discharge cycle characteristics are exceptional.

Abstract: Embodiments of a non-aqueous electrolyte for a rechargeable sodium (Na)-based battery comprise a sodium salt and a nonaqueous solvent, the electrolyte having a sodium salt concentration ?2.5 M or a solvent-sodium salt mole ratio ?4:1. Na-based rechargeable batteries including the electrolyte exhibit both high cycling stability and high coulombic efficiency (CE). Some embodiments of the disclosed batteries attain a CE?80% within 10-30 charge-discharge cycles and maintain a CE?80% for at least 100 charge-discharge cycles. In certain embodiments, the battery is an anode-free battery in the as-assembled initial state.

Abstract: The present disclosure relates to an electrode assembly for preventing a phenomenon of a separator being pressed and/or disconnected from occurring when a free edge electrode is wound into a jelly roll, and an electrochemical device comprising the electrode assembly.

Abstract: An encapsulated lithium particle including: a core comprised of at least one of: lithium; a lithium metal alloy; or a combination thereof; and a shell comprised of a lithium salt, an oil, and optionally a binder, and the shell encapsulates the core, and the particle size is from 10 to 500 microns. Also, disclosed is a method of making the particle and using the particle in electrical devices such as a capacitor or a battery.

Abstract: Described here is a method for making an anode of a rechargeable battery, comprising incorporating a composition comprising LixM into the anode, wherein M is a Group 14 element. Also described here is an anode comprising a composition comprising LixM, wherein M is a Group 14 element, and a rechargeable battery comprising the anode.

Abstract: An energy conversion cell includes an electrochemical conversion unit. The energy conversion cell has an electrically positive side with a process gas supply and an electrically negative side. The electrochemical conversion unit, which has a self-supporting substrate and a number of functional layers, is disposed between the two sides. The electrochemical conversion unit has a positive electrode and a negative electrode. The negative electrode includes a porous metallic, self-supporting substrate.

Abstract: Embodiments of the present disclosure provide an energy storage device assembly, which may include: a plurality of energy storage devices, each energy storage device having a first electrode and a second electrode, the plurality of energy storage devices being connected to one another in series; and a liquid coolant transmission line in thermal communication with at least one of the plurality of energy storage devices.

Abstract: A rechargeable lithium-sulfur cell comprising a cathode, an anode, a separator electronically separating the two electrodes, a first electrolyte in contact with the cathode, and a second electrolyte in contact with the anode, wherein the first electrolyte contains a first concentration, C1, of a first lithium salt dissolved in a first solvent when the first electrolyte is brought in contact with the cathode, and the second electrolyte contains a second concentration, C2, of a second lithium salt dissolved in a second solvent when the second electrolyte is brought in contact with the anode, wherein C1 is less than C2. The cell exhibits an exceptionally high specific energy and a long cycle life.

Abstract: Secondary battery includes a battery assembly configured by alternately stacking positive electrodes 1 and negative electrodes 6 via separators 20, in which the positive electrode and the negative electrode respectively include collectors 3 and 8, and active materials 2 and 7 applied on the collectors. On each surface of the collector, a coated portion coated with the active material and an uncoated portion not coated with any active material are provided. In one or both of the positive electrode and the negative electrode, boundary portion 4a between the coated portion and the uncoated portion on the front surface of the collector, is positioned planarly away from boundary portion 4b between the coated portion and the uncoated portion on the rear surface of the collector.

Abstract: Provided is an electrode assembly including: a negative electrode including a negative electrode current collector (NC) and a negative electrode active material layer (NAL) disposed on at least one surface of the NC; a positive electrode including a positive electrode current collector (PC), a positive electrode active material layer (PAL) disposed on at least one surface of the PC, and an undercoat layer being disposed between the PC and the PAL and being higher in resistance value than the PC. The negative electrode and the positive electrode are stacked on each other. In at least one side of the thus stacked negative and positive electrodes, the NAL projects from an edge of the PAL in a direction in which the NC and PC extend, and the undercoat layer projects from an edge of the NAL in the direction.

Abstract: Disclosed are a cathode active material for secondary batteries and a lithium secondary battery including the same. More particularly, a cathode active material for secondary batteries having an operating voltage area of 2.50 V to 4.35 V, including a lithium cobalt-based oxide and a surface-treated lithium nickel-based oxide and having high rolling density by a bimodal form in which an average diameter of the cobalt-based oxide and an average diameter of the lithium nickel-based composite oxide are different, and a lithium secondary battery including the same are disclosed.

Abstract: A negative electrode for a rechargeable lithium battery that includes a negative active material layer including a carbon-based material having a peak of about 20 degrees to 30 degrees at a (002) plane in an X-ray diffraction pattern using a CuK? ray, and an SEI (solid electrolyte interface) passivation film including at least one material selected from an organic material and an inorganic material and having an average thickness of about 10 nm to about 50 nm on the surface of the active material layer of the electrode.

Abstract: Provided is a cathode including a cathode current collector, a cathode tab protruding from the cathode current collector, and an insulation layer coated with an insulating material on the cathode tab, and a secondary battery including the cathode. Since the cathode of the present invention includes an insulation layer on a cathode tab, the present invention may prevent an internal short circuit which may occur due to cell deformation or sharp edges of electrodes, which are formed during cutting of the electrodes in a preparation process of the battery, when the electrodes are stacked, or may prevent a physical short circuit between the cathode and the anode due to shrinkage of a separator in a high-temperature atmosphere. In a case where the cathode is used in a lithium secondary battery, safety and reliability in battery performance may be significantly improved.

Abstract: A current collector is covered with sodium metal through: (1) applying a sodium dispersion containing sodium metal and at least one substance selected from the group consisting of an imide salt and a binder, on a current collector in an inert gas environment (with an oxygen concentration of not more than 0.01% and a dew point of not more than ?10° C.), followed by heating and drying; (2) pressure bonding a piece of solid sodium metal having a surface which exhibits a metallic luster onto a current collector in the aforementioned inert gas environment; (3) vapor-depositing sodium metal on a current collector in a reduced pressure environment; or (4) immersing a current collector having a surface fired at a temperature ranging from 150 to 300° C. in molten sodium metal after removing a coating film which is generated on a surface and formed from impurities, in the aforementioned inert gas environment.

Abstract: A battery pressing device for pressing a battery cell, the battery cell including an external casing, an electrolyte, a battery element in which electrodes and a separator are arranged in layers in the external casing, electrode terminals extending out of the external casing from an end of the battery element, and an insulating member for preventing short-circuiting of the electrode terminals attached to the electrode terminals inside the external casing, the battery pressing device includes a pressing member configured to press the battery cell in a layering direction of the battery element over a region so as to avoid pressing the insulating member inside the external casing.

Abstract: A method for producing a lithium electrode for a lithium-ion battery includes: a) provision of a basic body including an active material having in particular metallic lithium, a lithium alloy, and/or a lithium intercalation material; b) treatment of the basic body with a treatment composition in a wet-chemical process for the formation of a lithium-ion-conducting protective layer, with a reaction of the active material with at least one component of the treatment composition; and c) an optional treatment of the electrode at increased temperature and/or in a vacuum.

Abstract: An electrode assemblage includes a first electrode assembly with first electrodes. Each first electrode has a porous first electrode current collector with a plurality of pores, and first electrode active material layers attached to the porous first electrode current collector. The electrode assemblage further includes a second electrode having a second electrode current collector and second electrode active material layers attached to the second electrode current collector, and also includes a separator disposed between the first electrode assembly and the second electrode.

Abstract: An object of the present invention is to provide a method for producing a resin film for a non-aqueous electrolyte secondary battery that does not inhibit the movement of ions such as lithium ions and that is arranged between a separator and a positive or negative electrode; and a resin film for a non-aqueous electrolyte secondary battery obtained by the production method. The method for producing a resin film for a non-aqueous electrolyte secondary battery comprises the steps of: coating a separator with a resin composition containing a solvent and a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) below (coating step); and drying the separator on which the resin composition has been coated (drying step).

Abstract: A porous interlayer for a lithium-sulfur battery includes an electronic component and a negatively charged or chargeable lithium ion conducting component. The electronic component is selected from a carbon material, a conductive polymeric material, and combinations thereof. In an example, the porous interlayer may be disposed between a sulfur-based positive electrode and a porous polymer separator in a lithium-sulfur battery. In another example, the porous interlayer may be formed on a surface of a porous polymer separator.

Abstract: Provided are methods and apparatus for charging a lithium sulfur (Li—S) battery. The Li—S battery has at least one unit cell comprising a lithium-containing anode and a sulfur-containing cathode with an electrolyte layer there between. One method provides controlled application of voltage pulses at the beginning of the charging process. An application period is initiated after a discharge cycle of the Li—S battery is complete. During the application period, voltage pulses are provided to the Li—S battery. The voltage pulses are less than a constant current charging voltage. Constant current charging is initiated after the application period has elapsed.

Abstract: A cathode material of a lithium ion secondary battery is provided, which includes a cathode active material and a glassy material coating on a surface of the cathode active material. The glassy material is capable of selectively allowing lithium ions to pass therethrough. The lithium ion secondary battery using the cathode material has the long cycle life and the high safety performance.

Abstract: An object of the present invention is to provide an ambient temperature molten salt having excellent electron conductivity in addition to ion conductivity. The present invention attains the object by providing an ambient temperature molten salt including a first imidazolium salt having a cationic segment represented by the general formula (1) and an anionic segment represented by MX4 (where M is a transition metal and X is a halogen); and a second salt having a cationic segment as a monovalent cation and an anionic segment as a halogen.

Abstract: The present invention provides a method for removing burrs of battery electrode plates using inductively coupled plasma (ICP) dry etching, in which an induction coil is used for ionizing reaction gas. A DC bias is applied to accelerate the ionized reaction gas to bombard the burrs of electrode plate, removing burrs that formed in machining processes using physical bombardment. The equipment used in the present invention is an ICP etch system. The method according to the present invention can completely remove the burrs of electrode plate, thereby effectively preventing short circuits caused by burrs penetrating the membrane separator in the battery.

Abstract: A positive electrode material that can form a positive electrode mixture containing composition with reduced changes over time and high productivity, a manufacturing method thereof, a non-aqueous rechargeable battery less likely to swell and having a high storage characteristic during storage at high temperatures, and a positive electrode that can form the battery are provided. The object is solved by providing a positive electrode material having a coating layer of an organic silane compound on a surface of a positive electrode active material made of a lithium nickel composite oxide represented by the general compositional formula (1): Li1+xMO2 where ?0.5?x?0.5, M represents a group of at least two elements including at least one of Mn and Co and Ni, and 20?a<100 and 50?a+b+c?100 when the ratios (mol %) of Ni, Mn, and Co in the elements forming M are a, b, and c, respectively.

Abstract: In one or more embodiments, an electrochemical device includes a substrate having a substrate surface; an amorphous metal oxide layer supported on the substrate surface; and a noble metal catalyst supported on the amorphous metal oxide layer to form a catalyst layer. The amorphous metal oxide layer may contact only 25 to 75 percent of the substrate surface. The amorphous metal oxide layer may include less than 10 weight percent of crystalline metal oxide. In certain instances, the amorphous metal oxide layer is substantially free of crystalline metal oxide.

Abstract: A battery module includes a plurality of battery cells. Each battery cell includes an anode having an anode active area, a cathode having a cathode active area, and an ion-conducting separator interposed between the anode active area and the cathode active area. A first subset of the battery cells are arranged in parallel wired battery cell pairs. Each parallel wired battery cell pair of the first subset has two adjacent battery cells with a cooling fin interposed between the two adjacent battery cells.

Abstract: A method is provided for manufacturing an electrode that has a porous inorganic layer on the surface of an active material layer and is suitable for constructing a nonaqueous secondary battery with excellent input-output performance. In this manufacturing method, an electrode perform, which has an active material layer (344) consisting primarily of active material particles (42) and supported on a collector (342), is prepared. The water concentration of at least the surface (344a) of the active material layer (344) is adjusted to 100 ppm to 500 ppm. A slurry (S) containing inorganic particles (44), a binder and an organic solvent is coated on the surface (344a) of the active material layer with the water concentration thus adjusted, to form a porous inorganic layer.

Abstract: The present invention relates to an electrode for a non-aqueous electrolyte secondary battery, a non-aqueous electrolyte secondary battery using the electrode, and a method for manufacturing the non-aqueous electrolyte secondary battery. The electrode for a non-aqueous electrolyte secondary battery includes a material mixture layer containing an active material and a porous insulating layer. The insulating layer is formed on the material mixture layer. The insulating layer contains a resin having a cross-linked structure and inorganic particles. A mixed layer that includes components of the insulating layer and components of the material mixture layer is provided at the interface between the insulating layer and the material mixture layer.

Abstract: An electrode assembly and a secondary battery having the same improve efficiency and stability of the secondary battery. The electrode assembly includes: a positive electrode plate having a positive electrode collector on which a positive electrode coating portion and a positive electrode non-coating portion are formed; a negative electrode plate having a negative electrode collector on which a negative electrode coating portion and a negative electrode non-coating portion are formed; a separator disposed between the positive electrode plate and the negative electrode plate; and an insulating member disposed on one side of the positive or negative electrode non-coating portion, and formed adjacent to at least one of the ends of the positive electrode coating portion and/or at least one of the end of the negative electrode coating portion. The electrode assembly at least prevents damage to a separator generated due to non-uniformity of the ends of the electrode coating portion.

Abstract: Electrodeposition involving an electrolyte having a surface-smoothing additive can result in self-healing, instead of self-amplification, of initial protuberant tips that give rise to roughness and/or dendrite formation on the substrate and/or film surface. For electrodeposition of a first conductive material (C1) on a substrate from one or more reactants in an electrolyte solution, the electrolyte solution is characterized by a surface-smoothing additive containing cations of a second conductive material (C2), wherein cations of C2 have an effective electrochemical reduction potential in the solution lower than that of the reactants.

Abstract: This is to provide an all solid state secondary battery which can be produced by an industrially employable method capable of mass-production and has excellent secondary battery characteristics.